1. While under the influence of cocaine, some users report prolonged feelings of pleasure because dopaminea) reduces the refractory period of neuronsb) remains in the synapse longer than normalc) increases the speed of nerve impulse transmissiond) diffuses rapidly throughout the pleasure centres of the brain

2. A hot foot results when a match is inserted in the side of a shoe and it lit. Very soon, the one recieving the hot foot 1. jerks their leg 2. feels the pain 3. grabs their footWhich of the events requires a motor neuron?a) 1 and 2b) 2 and 3c) 1 and 3d) 1,2, and 3

3. Shingles is caused by Herpes Zoster infection of the dorsal root ganglia. This disease would affecta) Motor impulses moving into the spinal cordb) Motor impulses moving out of the spinal cordc) Sensory impulses moving out of the spinal cordd) Sensory impulses moving into the spinal cord

Help? I'm so lost. I thought I had the answers down, but now I'm having doubts The options are all very similiar.

Oh, I'm so sorry!For the first once, I genuinely couldn't decide between b, and d because both are true. What is your reasoning for going with d?Could you explain why you think d is the right answer for 2?I was leaning towards c since motor neurons are only responsible for execution through muscles and glands. And for 3 - well, I was just totally lost on 3. I couldn't even narrow it down. All of them seemed right at one point. Again, if you don't mind explaining your reasoning for choosing d?